<template>
  <div id="app">
    <router-view  />
    <router-view  name="Footer"/>
  </div>
</template>
<script>
export default {
    components: {
    }
};
</script>
<style>
* {
  padding: 0px;
  margin: 0px;
  list-style: none;
  box-sizing: border-box;
}
html,
body,
#app {
  height: 100%;
}
html {
  font-size: 26.67vw;
  /* 
     1vw = 视口宽度(375px)的 百分之一  
     1vw = 3.75px
     1px = 1/3.75vw = 0.2667wv
     100px = 26.67vw

     1rem = 100px
     1rem = 根元素的字体大小  100px
      x？                    44px 
  */
}
body {
  font-size: 16px;
}
#app {
  display: flex;
  flex-direction: column;
}
#app .box {
  flex: 1;
  overflow-y: auto;
  display: flex;
  flex-direction: column;
}
#app .box .header {
  height: 0.44rem;
  /* background-color: lightblue; */
}
#app .box .main {
  flex: 1;
  /* overflow-y: auto; */
  background-color: #ccc;
}
#app .footer {
  height: 0.44rem;
  /* background-color: aquamarine; */
}
#app .footer ul {
  height: 100%;
  display: flex;
  justify-content: space-around;
  align-items: center;
}
/* 交叉选择器 */
#app .footer ul li.router-link-exact-active {
  color: red;
}
#app .footer ul li{
   display: flex;
   flex-direction: column;
   align-items: center;
}
#app .footer ul li span{
   font-size: .2rem;
}
</style>
